How many wars has the US been through?
All Wars of US French and Indian War (7 Years War)--while we were colony of Gt. Britain American Revolution War of 1812 Indian Wars (1817-1898) --not all officially declared by Congress Mexican War Civil War Spanish-American War World War I (The Great War) World War II Korean War---a UN Police Action Vietnam War--not officially declared by Congress Grenada Invasion 1983 Persian Gulf (Desert Storm) Current War with Iraq - Iraqi Freedom We have engaged in several undeclared wars, such as the undeclared Naval War with France, under Adams, and the War with the Barbary Pirates under Jefferson.
How many actual wars has the US fought in (Beware that many declarations can be made for the same war)?
There have been 13 full scale US wars but note there have been several US military actions there were not wars but still had tremendous global effects American Revolution War with Tripoli War of 1812 Mexican American War US Civil War Spanish American war WW One WW Two Cold War Korean War Vietnam War Desert Storm War on Terror
More Americans have been killed in traffic crashes than have been killed in all US wars fought in over 200 years?
No, not at all. Many conflicts have been solved without war. History remembers the wars, but the almost-wars are less memorable, to say nothing of the conflicts which have been settled without even the threat of war. For example, there was a conflict between the US and Great Britain in the 19th Century over where to draw the US-Canadian border, and although there was some talk of war, it never happened.